Research On Carrier Transportation And Recombination Property Of Organic Dielectric Material

In recent years, orCanic electronics become one of the burgeoning cross-subjects. It is combined by macromolecule chemistry, material, electron and so on. At the same time, it comes into being a burgeoning industry- orCanic electronics. The using and researching of materials and parts of an apparatus is developing in many ways. In this paper, it was researched that the specie of carriers, the mechanism of creating, the electron and cavity injection, transportation, recombination and the transportation laws of ions.It has be established that the Carriers Transportation theory Model and deduced the conductivity laws of electron, cavity and iron. They matched well by experimenting and theory. In this paper, we also made examined equipment in the aspect of showing orCanic material conductance, cathode material and the stability of orCanic semiconductor material besides that. We researched some experimenting ways about this and got the invention patent authorization. At the same time, the red, green, blue and white OLED/PLED displayshas been made. OrCanic materials include orCanic conductor, superconductor and orCanic nonconductor. At present, folks have made a kind of polymer. Its macromolecule is similar with conductance and cuprum. It is named orCanic cuprum. Electric macromolecules polymer is using in the aspect of information and technology widely because of their characters of low density, light weight and low price. It can be used to make solar battery, lightweight electrical wire, macromolecule battery, the materials of electromagnetism shielding and anlistatig. It also can be made to the contact material of absorbing microwaves, this material can escapes radars. It can be used as all kings of sensors. OrCanic semiconductor is important in using. OLED is a newly way to give birth to lights. The normal way is braised nearly 100nm orCanic semiconductor materials between anode and cathode. OLED is much better than CRT, LCD and PDP including soft crimping display, small thickness, light weight, wide angle, strong light, high resolving power, non-radiate, wide display areas. At the same time, it is not necessary to use back lights as a kind of independence luminescence facility. it has low consume and high color saturation.. Its response time is faster 1000 times than LCD. People think that it is the third era display technology instead of CRT, LCD, and PDP.It has been known that carriers of electron electric polymer are free electron. The carriers of orCanic semiconductor are electron and cavity. Some polymer macromolecule, such as leather, anions and cations are in it, although there is not free electron and cavity insides. It is ion electric polymer.By studying the factors including thickness of cathode, using energy barrier layer of LiF , Ca:Al,Mg: Ag cathode affect electron inject capacity, it has been found that cathode inject effect is related with thickness of film. It should be pay attention to optimize thickness of OLED film in making parts of an apparatus. By adding metal alloys insert layer or energy barrier layer, the injection capcity could be lifted to higher step without optical spectrum changes with the holes injection layer between anode and holes transport layer, the lower threshold voltage and higher spectrum efficiency can also be achieved.We established the Carrier Transportation Model, which deduced the conductivity priciple of electron, cavity and ion medium. From the experiment data, they matched well. In conclusion, the device could be optimised by changing injection thickness. To ion onCanic materials, temperature, humidity and pressure affect its electrical performance critically. When torr increased, conductivity became larger, so did the wetting factor but temperature played the oposite role. Among these three, wetting was the most obvious factor. The electrical and optical property of device could be better abtained by adding new orCanic materials. As to these materials, they were not stable when exposed to the air, and the device was too easy to operate in case of absorbing water or if bad structured. The direct recombinition was the main factor in luminances. Under the mutual affect between electron and cavity, the exicton was formed, and the energy was released in the relaxion process, in the form of light radiation; the exicton could also be formed in orCanics dopped with dyes. The radiation of this kind also belonged to direct recombination. The nearer the bandCap was between high occupied molecular orbit (HOMO) and lowest unoccupied molecular orbid (LUMO), the more efficient the recombinition was. The spectrum intensity of mixed emitting layer device was not based on adding althogim. For example, the spectrum date of MEH-PPV could be neglected at the range of 500 nm to 540 nm for its weak brightness. And the spectrum of PVK has high level value at the arrage of 500nm to 540nm, its brightness tendency was weaker at higher wavelength. The x value of peak position also had an obviously change. MEH-PPV: PVK spectrum intensity became greater at the higher wavelength and the peak position on X alix has an obvious change, too. Usually, the cathod with electron injection was not stable. In 30 secnonds, this phenomenon could be discovered on its electrical property. If we fabricated a thin capping film, to protect the cathod and functional layer, the device lifetime could be better improved, even under other unchanged parameters. For example, the fabricated Te flim could prolonged the device's lifetime twice or over.By studying the optical spectrum of MEH-PPV,PVK,MEH-PPV: PVK, we found that mix optical spectrum cannot be engendered by adding simple. The spectrum date of MEH-PPV could be neglected at the range of 500nm to 540nm for its weak brightness. And the spectrum of PVK has high level value at the range of 500nm to 540nm, its brightness tendency is weaker at higher wavelength. The x ray of peak position also has an obviously change. In fact, though the main factor is electron and holes complex directly, other complex ways are also existed.By studying the resistant and time relation of Al cathode and Al cathode with film, we know that generally inject electron cathode is instable. In 30 seconds, it could be discovered on its electrical property. If we fabricated a thin capping film, it can protect the Al cathode and functional layer. Under the condition of high vacuum, we swing in with Se,Sb,Te encapsulation films. By this way, the device lifetime could be better improved without changing the spectrum. For example, the fabricated Te film could prolong to twice lifetime or over.Although many problems are existed in orCanic electronics yet, rich and colorful OrCanic materials can be used widely. At present, in the aspect of researching orCanic electric materials, America, England, Japan are keeping ahead and getting many important productions. In 21 century, technological innovation has been one of the factors that promote knowledge economy developing. We must begin with basic research .Then we can have large technological innovation. OrCanic materials are expanding towards electron and information fields quickly so that it satisfies the needs of information era. At present, electromagnetism pollution has been the forth social effects of pollution affecting human being survive. It can provide newly contribution for human being, a newly era- orCanic electronics era will come soon.